I use a rubbermaid container I found at a dollar store for $2
my usb battery pack is 30000mah, it has 2 usb ports and comfortably handles the shark rf, and tp-link all at once. Havent turned this on in about 9 months, still charged. Has built in light Ive never found a need for too.
Walmart sells these outdoor products water tight, airtight, lockable which would work well too